Slot Machine

ABSTRACT

A slot machine according to the present invention includes a display device having a first display region for displaying a symbol, a second display region for displaying a payout symbol, and a third display region for displaying a magnification symbol; a memory for memorizing two tables, one for storing identification data of the payout symbol and payout data corresponding to the payout symbol, and the other for storing identification data of the magnification symbol and magnification data corresponding to the magnification symbol; and a controller for controlling the display device and the memory. The controller randomly rearranges the symbol, the payout symbol, and the magnification symbol in the first, the second, and the third display regions, respectively. The controller awards payout determined by multiplying the payout data corresponding to the payout symbol rearranged in the second display region by the magnification data corresponding to the magnification symbol rearranged in the third display region.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority of U.S. Provisional Application No. 61/038,947 filed on Mar. 24, 2008. The contents of this application are incorporated herein by reference in their entirety.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a slot machine.

2. Description of the Related Art

In a conventional slot machine, when a player inserts a game medium, such as a coin and a bill, in an insertion slot of a slot machine and presses a SPIN button, a display provided on a front face of a cabinet displays a plurality of symbols in a scrolling manner.

Then, scrolling of each of the symbols automatically stops. As such a slot machine, for example, as disclosed in U.S. Pat. No. 6,093,102, a slot machine exists which employs a concept of a winning line. In this concept, in case a combination of symbols rearranged on a winning line is a predetermined winning combination, a predetermined number of game media are paid out.

In addition, as such a slot machine, for example, as disclosed in each of U.S. Pat. No. 6,604,999 and U.S. Patent Publication No. 2002/0065124, a slot machine exists which provides two types of payout, including payout determined by a combination of symbols rearranged on a winning line and payout determined by a number of displayed scatter symbols.

With a slot machine of this conventional type, however, players are allowed to have expectations only for random payout based on a combination of plural types of symbols that have been randomly arranged in the display device. Accordingly, a need exists for the advent of a slot machine which can offer new entertainability.

The present invention has been made in view of the above-described problems. It is an object of the present invention to provide a novel slot machine by enhancing entertainability associated with rearrangement of the symbols.

SUMMARY OF THE INVENTION

A first aspect of the present invention is a slot machine including: a display device including a symbol display region having a first display region for displaying plural types of symbols, a second display region for displaying at least one of plural types of payout symbols for determining payout, and a third display region for displaying at least one of plural types of magnification symbols for determining a payout magnification; a memory for memorizing two tables, one is for storing identification data of the plural types of payout symbols and payout data corresponding to the payout symbols, and the other is for storing identification data of the plural types of magnification symbols and magnification data corresponding to the magnification symbols; and a controller for controlling the display device and the memory. The controller is programmed to: (a) execute a basic game; (b) randomly rearrange, during the basic game, the plural types of symbols in the first display region, at least one of the plural types of payout symbols in the second display region, and at least one of the plural types of magnification symbols in the third display region; and (c) award payout determined by multiplying the payout data memorized in the memory, the payout data corresponding to the payout symbol rearranged in the second display region, by the magnification data corresponding to the magnification symbol rearranged in the third display region, by referring to the tables memorized in the memory, in the case where a combination of the symbols displayed on the first display region during the basic game is a predetermined combination.

According to the first aspect, in the case where a combination of symbols is a predetermined one, the payout is awarded by multiplying a value corresponding to the rearranged payout symbol by magnification corresponding to the magnification symbol. For example, in the case of rearrangement of the payout symbol “Mini” and the magnification symbol “10×”, the payout is to be awarded by multiplying a value corresponding to the payout symbol “Mini” by magnification corresponding to the magnification symbol “10×”. Therefore, the slot machine can be improved in its entertainability associated with symbol rearrangement.

A second aspect of the present invention is a slot machine constituted as set forth below. In the first aspect, the controller, in the itemized (b), rearranges the plural types of symbols in the first display region after a predetermined period having been preset has elapsed after rearrangement of at least one of the plural types of payout symbols and at least one of the plural types of magnification symbols in the second display region and the third display region, respectively.

According to the second aspect, the symbols are rearranged after rearrangement of the magnification symbol and the payout symbol. For example, in the case where a predetermined combination of symbols are rearranged after rearrangement of the payout symbol “Major” and the magnification symbol “20×”, the payout is to be awarded by multiplying a value corresponding to the payout symbol “Major” by magnification corresponding to the magnification symbol “20×”. Therefore, the slot machine can be improved in its entertainability associated with symbol rearrangement.

A third aspect of the present invention is a slot machine constituted as set forth below. In the first aspect, the controller, in the itemized (b), randomly switches between a first process and a second process, the first process is for rearranging at least one of the plural types of payout symbols and at least one of the plural types of magnification symbols in the second display region and the third display region, respectively, after rearrangement of the plural types of symbols in the first display region, and the second process is for rearranging the plural types of symbols in the first display region after the predetermined period having been preset has elapsed after rearrangement of at least one of the plural types of payout symbols and at least one of the plural types of magnification symbols in the second display region and the third display region, respectively.

According to the third aspect, symbol rearrangement can be randomly switched between two rearrangement cases. In one case, the symbols are rearranged after rearrangement of the magnification symbol and the payout symbol. In the other case, the magnification symbol and the payout symbol are rearranged after rearrangement of the symbols. Therefore, the slot machine can be improved in its entertainability associated with symbol rearrangement.

A fourth aspect of the present invention is a slot machine constituted as set forth below. In the third aspect, a memory for memorizing a first random number table provided with random numbers so as to set a high probability of determination of the first process, and a second random number table provided with random numbers so as to set a high probability of determination of the second process. The controller randomly switches between the first process and the second process with use of the second random number table in the case where arrangement of a winning combination in the first display region is internally determined.

According to the fourth aspect, symbol rearrangement can be randomly switched between two rearrangement cases according to random number tables. In one case, the symbols are rearranged after rearrangement of the magnification symbol and the payout symbol. In the other case, the magnification symbol and the payout symbol are rearranged after rearrangement of the symbols. Therefore, the slot machine can be improved in its entertainability associated with symbol rearrangement.

A fifth aspect of the present invention is a slot machine constituted as set forth below. In the first aspect, the slot machine further includes a BET button for accepting input of a side-BET. The controller, in the itemized (c), awards payout determined by multiplying a value of the payout symbol rearranged in the second display region, by magnification of the magnification symbol rearranged in the third display region on the condition of the input of the side-BET through the BET button.

According to the fifth aspect, the payout symbol and the magnification symbol are rearranged on the condition of the input of the side-BET. For example, in the case of rearrangement of the payout symbol “Mega” and the magnification symbol “30×”, the payout is to be awarded by multiplying a value corresponding to the payout symbol “Mega” by magnification corresponding to the magnification symbol “30×”. Therefore, the slot machine can be improved in its entertainability associated with symbol rearrangement.

A sixth aspect of the present invention is a slot machine including: a display device including a symbol display region having a first display region for displaying plural types of symbols, a second display region for displaying at least one of plural types of payout symbols for determining payout, and a third display region for displaying at least one of plural types of magnification symbols for determining a payout magnification; a memory for memorizing two tables, one is for storing identification data of the plural types of payout symbols and payout data corresponding to the payout symbols, and the other is for storing identification data of the plural types of magnification symbols and magnification data corresponding to the magnification symbols; and a controller for controlling the display device and the memory. The controller is programmed to: (a) execute a basic game; (b) rearrange, during the basic game, the plural types of symbols in the first display region after a predetermined period having been preset has elapsed after rearrangement of at least one of the plural types of payout symbols and at least one of the plural types of magnification symbols in the second display region and the third display region, respectively; and (c) award payout determined by multiplying the payout data memorized in the memory, the payout data corresponding to the payout symbol rearranged in the second display region, by the magnification data corresponding to the magnification symbol rearranged in the third display region, by referring to the tables memorized in the memory, in the case where a combination of the symbols displayed on the first display region during the basic game is a predetermined combination.

According to the sixth aspect, the symbols are rearranged after rearrangement of the magnification symbol and the payout symbol. For example, in the case where a predetermined combination of symbols is rearranged after rearrangement of the payout symbol “Major” and the magnification symbol “20×”, the payout is to be awarded by multiplying a value corresponding to the payout symbol “Major” by magnification corresponding to the magnification symbol “20×”. Therefore, the slot machine can be improved in its entertainability associated with symbol rearrangement.

A seventh aspect of the present invention is a slot machine constituted as set forth below. In the sixth aspect, the controller, in the itemized (b), randomly switches between a first process and a second process, the first process is for rearranging at least one of the plural types of payout symbols and at least one of the plural types of magnification symbols in the second display region and the third display region, respectively, after rearrangement of the plural types of symbols in the first display region, and the second process is for rearranging the plural types of symbols in the first display region after the predetermined period having been preset has elapsed after rearrangement of at least one of the plural types of payout symbols and at least one of the plural types of magnification symbols in the second display region and the third display region, respectively.

According to the seventh aspect, symbol rearrangement can be randomly switched between two rearrangement cases. In one case, the symbols are rearranged after rearrangement of the magnification symbol and the payout symbol. In the other case, the magnification symbol and the payout symbol are rearranged after rearrangement of the symbols. Therefore, the slot machine can be improved in its entertainability associated with symbol rearrangement.

An eighth aspect of the present invention is a slot machine constituted as set forth below. In the seventh aspect, the slot machine further includes a memory for memorizing a first random number table provided with random numbers so as to set a high probability of determination of the first process, and a second random number table provided with random numbers so as to set a high probability of determination of the second process. The controller randomly switches between the first process and the second process with use of the second random number table in the case where arrangement of a winning combination in the first display region is internally determined.

According to the eighth aspect, symbol rearrangement can be randomly switched between two rearrangement cases according to random number tables. In one case, the symbols are rearranged after rearrangement of the magnification symbol and the payout symbol. In the other case, the magnification symbol and the payout symbol are rearranged after rearrangement of the symbols. Therefore, the slot machine can be improved in its entertainability associated with symbol rearrangement.

A ninth aspect of the present invention is a slot machine constituted as set forth below. In the sixth aspect, the slot machine further includes a BET button for accepting input of a side-BET. The controller, in the itemized (c), awards payout determined by multiplying a value of the payout symbol rearranged in the second display region, by magnification of the magnification symbol rearranged in the third display region on the condition of the input of the side-BET through the BET button.

According to the ninth aspect, the payout symbol and the magnification symbol are rearranged on the condition of the input of the side-BET. For example, in the case of rearrangement of the payout symbol “Mega” and the magnification symbol “30×”, the payout is to be awarded by multiplying a value corresponding to the payout symbol “Mega” by magnification corresponding to the magnification symbol “30×”. Therefore, the slot machine can be improved in its entertainability associated with symbol rearrangement.

A tenth aspect of the present invention is a slot machine including: a display device including a symbol display region having a first display region for displaying plural types of symbols, a second display region for displaying at least one of plural types of payout symbols for determining payout, and a third display region for displaying at least one of plural types of magnification symbols for determining a payout magnification; a memory for memorizing two tables, one is for storing identification data of the plural types of payout symbols and payout data corresponding to the payout symbols, and the other is for storing identification data of the plural types of magnification symbols and magnification data corresponding to the magnification symbols; and a controller for controlling the display device and the memory. The controller is programmed to: (a) execute a basic game; (b) randomly switches between a first process and a second process, the first process is for rearranging at least one of the plural types of payout symbols and at least one of the plural types of magnification symbols in the second display region and the third display region, respectively, after rearrangement of the plural types of symbols in the first display region, and the second process is for rearranging the plural types of symbols in the first display region after the predetermined period having been preset has elapsed after rearrangement of at least one of the plural types of payout symbols and at least one of the plural types of magnification symbols in the second display region and the third display region, respectively; and (c) award payout determined by multiplying the payout data memorized in the memory, the payout data corresponding to the payout symbol rearranged in the second display region, by the magnification data corresponding to the magnification symbol rearranged in the third display region, by referring to the tables memorized in the memory, in the case where a combination of the symbols displayed on the first display region during the basic game is a predetermined combination.

According to the tenth aspect, symbol rearrangement can be randomly switched between two rearrangement cases. In one case, the symbols are rearranged after rearrangement of the magnification symbol and the payout symbol. In the other case, the magnification symbol and the payout symbol are rearranged after rearrangement of the symbols. Therefore, the slot machine can be improved in its entertainability associated with symbol rearrangement.

An eleventh aspect of the present invention is a slot machine constituted as set forth below. In the tenth aspect, the slot machine further includes a memory for memorizing a first random number table provided with random numbers so as to set a high probability of determination of the first process, and a second random number table provided with random numbers so as to set a high probability of determination of the second process. The controller randomly switches between the first process and the second process with use of the second random number table in the case where arrangement of a winning combination in the first display region is internally determined.

According to the eleventh aspect, symbol rearrangement can be randomly switched between two rearrangement cases according to random number tables. In one case, the symbols are rearranged after rearrangement of the magnification symbol and the payout symbol. In the other case, the magnification symbol and the payout symbol are rearranged after rearrangement of the symbols. Therefore, the slot machine can be improved in its entertainability associated with symbol rearrangement.

A twelfth aspect of the present invention is a slot machine constituted as set forth below. In the tenth aspect, the slot machine further includes a BET button for accepting input of a side-BET. The controller, in the itemized (c), awards payout determined by multiplying a value of the payout symbol rearranged in the second display region, by magnification of the magnification symbol rearranged in the third display region on the condition of the input of the side-BET through the BET button.

According to the twelfth aspect of the present invention, the payout symbol and the magnification symbol are rearranged on the condition of the input of the side-BET. For example, in the case of rearrangement of the payout symbol “Mega” and the magnification symbol “30×”, the payout is to be awarded by multiplying a value corresponding to the payout symbol “Mega” by magnification corresponding to the magnification symbol “30×”. Therefore, the slot machine can be improved in its entertainability associated with symbol rearrangement.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1A is a view showing an exemplary symbol matrix during a basic game according to a first embodiment;

FIG. 1B is a view showing an exemplary symbol matrix during the basic game according to the first embodiment;

FIG. 1C is a view showing an exemplary symbol matrix during the basic game according to the first embodiment;

FIG. 2 is a perspective view schematically showing a slot machine according to the first embodiment;

FIG. 3 is a view showing an internal construction of the slot machine shown in FIG. 2;

FIG. 4 is a view showing an exemplary random number data table according to the first embodiment;

FIG. 5A is a view showing an exemplary image displayed in the slot machine shown in FIG. 2 during the basic game according to the first embodiment;

FIG. 5B is a view showing an exemplary image displayed in the slot machine shown in FIG. 2 during the basic game according to the first embodiment;

FIG. 5C is a view showing an exemplary image displayed in the slot machine shown in FIG. 2 during the basic game according to the first embodiment;

FIG. 6A is a view showing an exemplary image displayed in the slot machine shown in FIG. 2 during the basic game according to the first embodiment;

FIG. 6B is a view showing an exemplary image displayed in the slot machine shown in FIG. 2 during the basic game according to the first embodiment;

FIG. 6C is a view showing an exemplary image displayed in the slot machine shown in FIG. 2 during the basic game according to the first embodiment;

FIG. 7A is a view showing an exemplary image displayed in the slot machine shown in FIG. 2 during a free game according to the first embodiment;

FIG. 7B is a view showing an exemplary image displayed in the slot machine shown in FIG. 2 during the free game according to the first embodiment;

FIG. 7C is a view showing an exemplary image displayed in the slot machine shown in FIG. 2 during the free game according to the first embodiment;

FIG. 8 is a flowchart showing a subroutine of the main process;

FIG. 9 is a flowchart showing a subroutine of a game execution process according to the first embodiment;

FIG. 10 is a flowchart showing a subroutine of symbol rearrangement process according to the first embodiment;

FIG. 11 is a flowchart showing a subroutine of a free game execution process according to the first embodiment;

FIG. 12 is a flowchart showing a subroutine of a jackpot bonus game execution process according to the first embodiment;

FIG. 13 is a view schematically depicting a frame format of an appearance of a slot machine according to a second embodiment;

FIG. 14 is a flowchart exemplarily showing a subroutine of a symbol rearrangement process according to a third embodiment; and

FIG. 15 is a flowchart exemplarily showing a subroutine of a symbol rearrangement process according to a fourth embodiment.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

First, a slot machine 10 according to a first embodiment will be described in detail with reference to the drawings. The slot machine according to the first embodiment is a so-called video slot machine, which has an image display panel such as a liquid crystal display and executes a game by displaying images of various symbols on the image display panel.

FIGS. 1A, 1B, and 1C are views each showing an exemplary symbol matrix according to the first embodiment. The slot machine 10 according to the present invention executes any one of three types of gaming modes including a basic game, a free game, and a jackpot bonus game. The basic game is executed upon consuming a gaming value corresponding to the amount bet by a player. The free game is executed without consuming a gaming value. The jackpot bonus game is executed when a jackpot value reaches a predetermined progressive value. While the slot machine 10 is of a stand-alone type, which is not connected to a network, the present invention is also applicable to a networked slot machine.

As shown in FIGS. 1A to 1C, a symbol matrix SM is displayed on a lower image display panel 16 included in a slot machine 10 to be described later. A total of fifteen symbols in three rows and five columns are rearranged in the symbol matrix SM.

In the first embodiment of the present invention, any combination of symbols “main character” 121, “sub character” 122, “office building” 123, “gold bullion” 124, “car” 125, “stock certificate” 126, “jet” 127, and “villa” 128, is randomly rearranged in a first display region 74 of the symbol matrix SM, and payout is determined based on a combination of these symbols rearranged in the symbol matrix SM. One or more payout symbols “Mini” 78 a, “Major” 78 b, and “Mega” 78 c for determining payout are displayed in a second display region 75. One or more magnification symbols “5×” 77 a, “10×” 77 b, “15×”, and “20×” 77 c for determining payout magnification are rearranged in a third display region 76. In the case where a combination of symbols displayed on the first display region 74 results in a predetermined one having been preset, the payout is to be awarded by multiplying a value corresponding to any of the payout symbols 78 a, 78 b, 78 c displayed on the second display region 75, by magnification of any of the magnification symbols 77 a, 77 b, 77 c rearranged in the third display region 76.

As shown in FIG. 1A, any one of magnification symbols of plural types for determining the payout magnification is rearranged in the third display region 76 of the symbol matrix SM. Here, a magnification symbol “10×” 77 a is displayed on the first display region 74 of the symbol matrix SM.

As shown in FIG. 1B, any one of the payout symbols 78 a, 78 b, 78 c of the plural types for determining the payout is rearranged in the second display region 75 of the symbol matrix SM. Here, a payout symbol “Mini” 78 a is rearranged in the second symbol region 75 of the symbol matrix SM.

As shown in FIG. 1C, the symbols “main character” 121, “sub character” 122, “office building” 123, “gold bullion” 124, “car” 125, “stock certificate” 126, “jet ” 127, and “villa” 128, are randomly rearranged in the first display region 74 of the symbol matrix SM. Here, a combination of three symbols “office building” 123 is rearranged in the first display region 74 of the symbol matrix SM while the payout symbol “Mini” 78 a and the magnification symbol “10×” 77 a are rearranged in the second display region 75 and the third display region 76, respectively. Therefore, the payout is to be awarded, which is determined by multiplying a value of the payout symbol “Mini” corresponding to the combination of three symbols “office building” 123 by the magnification of the magnification symbol “10×”.

FIG. 2 is a view schematically depicting a frame format of an appearance of the slot machine 10 according to the first embodiment. The gaming media used in the slot machine 10 include coins, bills, or electronic value information equivalent thereto. In the present invention, however, the gaming media are not limitative thereto in particular, and can include medals, tokens, electric money, and tickets, for example. The above tickets are not limitative in particular, and can include barcode-attached tickets or the like, as described later, for example.

The slot machine 10 is provided with a cabinet 11, a top box 12 installed on an upper side of the cabinet 11, and a main door 13 provided on a front surface of the cabinet 11.

The lower image display panel 16 serving as a display device is provided in front of the main door 13. The lower image display panel 16 is provided with a liquid crystal panel, which displays fifteen elements of the symbol matrix 28 in three rows and five columns. In each symbol matrix SM, one symbol is arranged.

A credit amount display unit 31 of the lower image display panel 16 displays the number of coins credited by way of an image. A payout amount display unit 32 displays by way of an image the number of, for example, coins to be paid when a predetermined number or more symbols of respective types are rearranged in the elements of the symbol matrix SM.

Provided on a lower side of the lower image display panel 16 are a control panel 20 having a plurality of buttons 23 to 27 and 85 through which command regarding the process of the game will be input by a player, a coin receiving slot 21 for receiving coins into the cabinet 11, and a bill validator 22.

On the control panel 20, a start button 23, a change button 24, a cashout button 25, a 1-BET button 26, a MAX-BET button 27, and a side-BET button 85 are provided. The start button 23 is intended for entering a command for starting the game. The change button 24 is intended for use in asking an attendant of the gaming facility for change. The cashout button 25 is intended for entering a command for paying the credited coins to a coin tray 18 through a coin payout exit 19.

The 1-BET button 26 is intended for entering a command for betting one coin among the credited coins on the game. The max-BET button 27 is intended for entering a command for betting the upper number (50 in this embodiment) of coins that can be bet per game among the credited coins on the game. The side-BET button 85 is intended for entering a command for betting coins on the game if players desire to place a bet on one more game.

The bill validator 22 validates whether or not a bill is legitimate and accepts a legitimate bill into the cabinet 11. The bill validator 22 may be configured so that a barcode-attached ticket 39 described later is readable thereby. Provided on a lower front surface of the main door 13, that is, at a lower part of the control panel 20, is a berry glass 34 on which characters of the slot machine 10 and the like are depicted.

On a front surface of the top box 12, an upper image display panel 33 is provided. The upper image display panel 33 has a liquid crystal panel, which displays images for introducing the game contents or explaining game rules, for example.

Also, on the top box 12, a speaker 29 and a lamp 30 are provided. On a lower side of the upper image display panel 33, a ticket printer 35, a card reader 36, a data display 37, and a key pad 38 are provided. The ticket printer 35 prints on the ticket, a barcode having encoded thereon data such as the credit amount, the date and time, and the identification number of the slot machine 10, and outputs the printed ticket as the barcode-attached ticket 39. A player causes another slot machine to read the bar-code-attached tickets 39, allowing the slot machine to perform games, or alternatively, allowing the exchange of bar-code-attached tickets 39 with bills or the like at a predetermined site of a game facility (for example, at the casher in a casino).

The card reader 36 reads data from and write data into a smart card. The smart card is to be owned by the player, which stores data for identifying the player or data regarding the log of games executed by the player, for example. The smart chard may store data corresponding to coins, bills, or a credit. As an alternative of a smart card, a magnetic stripe card may be employed. The data display 37 is made up of a fluorescent display and the like, and displays the data read by the card reader 36 or the data input by the player through the key pad 38, for example. The key pad 38 inputs data and commands regarding the ticket issuance or the like.

FIG. 3 is a block diagram depicting the internal construction of the slot machine shown in FIG. 2. A gaming board 50 includes: a CPU (Central Processing Unit) 51, a ROM (Read-only Memory) 55 and a boot ROM 52 interconnected by an internal bus; a card slot 53S corresponding to a memory card 53; and an IC socket 54S corresponding to a GAL (Generic Array Logic) 54.

A memory card 53 is composed of a non-volatile memory, such as CompactFlash (registered trademark), and stores a game program. The game programs include a symbol selection program. The aforementioned symbol selection program is intended for determining the symbols to be rearranged in the elements of the symbol matrix SM. The symbol selection program includes symbol weighing data corresponding to each of a plurality of kinds of payout ratios (for example, 80%, 84%, and 88%). The symbol weighting data is indicative of the correspondence relationship between the respective symbols and one or more random numeric values which come under a predetermined numerical range (0 to 255). The payout ratio is determined according to the payout-ratio setting data output from the GAL 54. The symbols to be rearranged in the symbol matrix SM are determined depending upon the symbol weighing data corresponding to this payout ratio. Further, the game programs include table data indicating the correspondence relationship between each of the symbols and a payout.

Also, the card slot 53S is configured to allow the memory card 53 to be inserted thereinto or ejected therefrom, and is connected to a motherboard 40 through an IDE pass. Accordingly, the memory card 53 can be ejected from the card slot 53S, other game programs and other game system programs can then be written into the memory card 53, and further, the memory card 53 can be inserted into the card slot 53S, thereby allowing the player to change the types and contents of games executed in the slot machine 10. The game program includes programs concerning a game progress. Furthermore, the game program includes image data or sound data to be output during the game. Furthermore, the game program includes image data or sound data to be output during the game. The image data include, for example, image data indicative of the symbol matrix SM.

The GAL 54 is a type of a PLD (Programmable Logic Device)having a fixed OR array structure. The GAL 54 includes plural input ports and plural output ports. Where predetermined data is input to the input port, the GAL 54 outputs data corresponding to the aforementioned data from the output port. The data output from this output port is equivalent to the aforementioned payout-ratio setting data. Also, the IC socket 54S is configured to allow the GAL 54 to be attached thereto or detached therefrom, and is connected to a motherboard 40 through PCI bus. Accordingly, the GAL can be replaced with a replacement GAL 54 to change the payout-ratio setting data.

The CPU 51, the ROM 55, and the boot ROM 52 interconnected by the internal bus are connected to the motherboard 40 by the PCI bus. The PCI bus serves to transmit signals between the motherboard 40 and the gaming board 50 and supply power from the motherboard 40 to the gaming board 50. The motherboard 40 is constructed with a commercially available general-purpose motherboard (a printed circuit board on which the essential parts of a personal computer are mounted).

The motherboard 40 is constructed using a general-purpose motherboard commercially available (a printed circuit board on which essential parts of a personal computer are mounted) and includes: a main CPU 41, a ROM (Read Only Memory) 42; a RAM (Random Access Memory) 43; and a communication interface 44. The main CPU 41 functions as a processor for controlling a display device and memory according to the embodiment of the present invention.

The ROM 42 is made up of a memory device such as a flash memory and stores thereon a program such as BIOS (Basic Input/Output System) executed by the main CPU 41, and permanent data. When the BIOS is executed by the main CPU 41, processing of initializing predetermined peripheral devices is carried out and processing of capturing game programs and game system programs stored in the memory card 53 through the gaming board 50 is started. In the present invention, the contents of the ROM 42 may be rewritable or not.

The RAM 43 stores data and a program used when the main CPU 41 is activated. The RAM 43 can also store game programs. The RAM 43 further stores data concerning the credit amount, the number of coin-in or coin-out for one game, and the like.

Both a main body PCB (Printed Circuit Board) 60 and a door PCB 80, which will be described later, are connected to the motherboard 40 by USB. A power supply unit 45 is also connected to the motherboard 40.

Equipment and devices, which generate input signals to be input to the main CPU41, and equipment and devices, operations of which are controlled by a control signal output from the main CPU41, are connected to the body PCB60 and the door PCB80. The main CPU41 executes the game programs stored in RAM 43, based upon an input signal that was input to the main CPU41, thereby performing predetermined computational processing. Then, this CPU41 stores results thereof into RAM43; and transmits control signals to equipment and devices as control processing relative to the equipment and devices.

Connected to the main body PCB 60 are a lamp 30, a hopper 66, a coin detecting section 67, a graphic board 68, a speaker 29, a touch panel 69, a bill validator 22, a ticket printer 35, a card reader 36, a key switch 38S, and a data display 37. The lamp 30 illuminates in a predetermined pattern, based on a control signal output from a main CPU 41. The lamp 30 is lit up in a predetermined pattern, based upon a control signal output from the main CPU41.

The hopper 66 is installed in the cabinet 11. This hopper pays out a predetermined number of coins from a coin payout exit 19 to a coin tray 18, based upon a control signal output from the main CPU41. A coin detecting section 67 is installed inside the coin payout exit 19. This detecting section outputs an input signal to the main CPU41 at the time of detecting that a predetermined number of coins have been paid out from the coin payout exit 19.

The graphic board 68 performs control, based upon a control signal output from the main CPU41, images to be displayed on the upper image display panel 33 and the lower image display panel 16. The credit amount display section 31 (see FIG. 2) on the lower image display panel 16 displays the number of credits stored in the RAM43. Further, the payout amount display section 32 (see FIG. 2) on the lower image display panel 16 displays the number of coins to be paid out. The graphic board 68 is equipped with: a VDP (Video Display Processor), which generates image data based upon a control signal output from the main CPU41; and a video RAM, which temporarily stores image data generated by the VDP or the like. The image data used in generating image data with VDP is contained in the game program read from the memory card 53 and stored in the RAM 43.

The bill validator 22 validates whether or not a bill is legitimate and accepts a legitimate bill into the cabinet 11. The bill validator 22, upon accepting a legitimate bill, outputs an input signal to the main CPU 41 based on the bill amount. The main CPU 41 stores in the RAM 43 the credit amount corresponding to the bill amount transmitted by the input signal.

Based on a control signal output from the main CPU 41, the ticket printer 35 prints on a ticket a barcode having encoded thereon data such as the credit amount, data and time, and the identification number of the slot machine 10 stored in the RAM 43. Further, this printer outputs the printed ticket as a barcode-attached ticket 39. The card reader 36 transmits, to the main CPU41, the data read from the smart card, and writes the read data onto the smart card, based upon a control signal from the main CPU41. The key switch 38S is provided on the key pad 38, and outputs a predetermined input signal to the main CPU41 when a player operates the key pad 38. The data display 37 displays, based upon a control signal output from the main CPU41, the data read by the card reader 36 and the data input by a player through the key pad 38.

The control panel 20, a reverter 21S, a coin counter 21C, and a cold cathode tube 81 are connected to the door PCB 80. The control panel 20 is provided with: a start switch 23S corresponding to the start button 23; a change switch 24S corresponding to the change button 24; a cashout switch 25S corresponding to a cashout button 25; a 1-BET switch 26S corresponding to a 1-BET button 26; a MAX-BET switch 27S corresponding to the MAX-BET button 27; and a side-BET switch 85S corresponding to the side-BET switch 85. When the player operates the buttons 23 to 27 and 85, the corresponding switches 23S to 27S and 85S output input signals to the main CPU 41, respectively.

The coin counter 21C is provided inside the coin receiving slot 21 and validates whether or not a legitimate coin is inserted into the coin receiving slot 21. Those other than the legitimate coins are discharged from the coin payout exit 19. The coin counter 21C outputs an input signal to the main CPU 41 when a legitimate coin is detected.

The reverter 21S operates based on a control signal output from the main CPU 41 and distributes coins recognized as being legitimate by the coin counter 21C into a cash box (not shown in the drawings) or the hopper 66 which is arranged in the slot machine 10. Specifically, when the hopper 66 is filled with coins, the reverter 21S distributes legitimate coins into the hopper 21S. On the other hand, when the hopper 66 is not filled with coins, legitimate coins are distributed into the hopper 66. A cold cathode tube 81 functions as a backlight installed on rear face side of each of the lower image display panel 16 and the upper image display panel 33, and is lit up based on a control signal output from the main CPU 41.

FIG. 4 is a view showing an exemplary random number data table according to the first embodiment. This random number data table is stored in the ROM 42 and is used to randomly switch a process between a first process and a second process. In the first process, one or more of the payout symbol 78 a, 78 b, 78 c and one or more of the magnification symbols 77 a, 77 b, 77 c are rearranged in the second display region 75 and the third display region 76, respectively, after rearrangement of the symbols in the first display region 74. In the second process, the symbols are rearranged in the first display region 74 after a predetermined period having been preset has elapsed after rearrangement of one or more of the payout symbols 78 a, 78 b, 78 c and one or more of the magnification symbols 77 a, 77 b, 77 c in the second display region 75 and the third display region 76, respectively.

As shown in FIG. 4, the random number table includes a first random number table and a second random number table stored in the ROM 42. In the first random table, random numbers are provided so as to set a high probability of determination of the first process that one or more of the payout symbols 78 a, 78 b, 78 c and one or more of the magnification symbols 77 a, 77 b, 77 c are rearranged in the second display region 75 and the third display region 76, respectively. In the second random table, random numbers are provided so as to set a high probability of determination of the second process that the symbols are rearranged in the first display region 74 after the predetermined period having been preset has elapsed after rearrangement of one or more of the payout symbols 78 a, 78 b, 78 c and one or more of the magnification symbols 77 a, 77 b, 77 c in the second display region 75 and the third display region 76, respectively. The second random table is selected in the case where arrangement of a winning combination of symbols in the first display region 74 is internally determined. The first random table is selected in the case where such a determination is not internally determined.

FIGS. 5A to 7C are views each showing an exemplary image displayed in the slot machine 10 shown in FIG. 2 according to the first embodiment. FIGS. 5A, 5B, and 5C are views each showing an exemplary image displayed in the slot machine shown in FIG. 2 during the basic game according to the first embodiment.

As shown in FIG. 5A, the lower image display panel 16 is made up of a display region 92, an information display section 93, an effect image display section 94, and the like. The display region 92 is for displaying a symbol matrix SM. In addition, the information display section 93 is arranged above the display region 92. This display region is made up of a credit amount display section 93 a, a BET amount display section 93 b, a character information display section 93 c, a PAID amount display section 93 d, and a charge display section 93 e.

The number of coins presently credited is displayed at the credit amount display section 93 a while the number of coins bet in one game is displayed at the BET amount display section 93 b. The character information indicative of a current status of the game is displayed at the character information display section 93 c. The characters of “PLAYNOW” are displayed during the play of the game, whereas the characters of “GAMEOVER” are displayed during the intervals between the plays of the game. The number of coins that has been successfully obtained in one game is displayed at the PAID amount display section 93 d, whereas a conversion value of the credit amount based on a predetermined charge is displayed at the charge display section 93 e. On the effect image display section 94, effect images in accordance with types of the present slot game are displayed.

In the symbol matrix SM displayed on the lower image display panel 16, any combination of the symbols “main character” 121, “sub character” 122, “office building” 123, “gold bullion” 124, “car” 125, “stock certificate” 126, “jet” 127, and “villa” 128, is rearranged in the first display region 74. One or more of the payout symbols “Mini” 78 a, “Major” 78 b, and “Mega” 78 c for determining payout is rearranged in the second display region 75. One or more of the magnification symbols “45×” 77 a, “10×” 77 b, and “20×” 77 c for determining payout magnification is rearranged in the third display region 76.

As shown in FIG. 5A, one or more of the magnification symbols of the plural types for determining the payout magnification is displayed on the third display region 76 of the symbol matrix SM. In this case, a magnification symbol “5×” 77 b is rearranged in the third display region 76 of the symbol matrix SM.

As shown in FIG. 5B, one or more of the payout symbols 78 a, 78 b, 78 c of the plural types for determining the payout is rearranged in the second display region 75 of the symbol matrix SM. In this case, the payout symbol “Major” 78 b is displayed in the second display region 75 of the symbol matrix SM.

As shown in FIG. 5C, any combination of the symbols “main character” 121, “sub character” 122, “office building” 123, “gold bullion” 124, “car” 125, “stock certificate” 126, “jet ” 127, and “villa” 128, is rearranged in the first display region 74 of the symbol matrix SM. In this case, a combination of the three symbols “main character” 121 is rearranged in the first display region 74 of the symbol matrix SM. The payout symbol “Major” 78 b is rearranged in the second display region 75. The magnification symbol “5×” 77 b is rearranged in the third display region 76. Accordingly, the payout is to be awarded by multiplying a value set for the payout symbol “Major” corresponding to the combination of the three symbols “main character” 121, by magnification of the magnification symbol “5×”. In this case, since the combination of the three symbols “main character” 121 is rearranged, the free game is selected and executed according to this type of the combination.

FIGS. 6A, 6B, and 6C are views each showing an exemplary image displayed in the slot machine 10 shown in FIG. 2 during the basic game according to the first embodiment. As shown in FIG. 6A, one or more of the magnification symbols 77 a, 77 b, 77 c of the plural types for determining the payout magnification are displayed on the third display region 76 of the symbol matrix SM. In this case, the magnification symbol “20×” 77 c is rearranged in the first display region 74 of the symbol matrix SM.

As shown in FIG. 6B, one or more of the payout symbols 78 a, 78 b, 78 c of the plural types for determining the payout are rearranged in the second display region 75 of the symbol matrix SM. In this case, the payout symbol “Mega” 78 c is displayed on the second display region 75 of the symbol matrix SM.

As shown in FIG. 6C, any combination of the symbols “main character” 121, “sub character” 122, “office building” 123, “gold bullion” 124, “car” 125, “stock certificate” 126, “jet ” 127, and “villa” 128, is rearranged in the first display region 74 of the symbol matrix SM. In this case, a combination of the three symbols “sub character” 122 is rearranged in the first display region 74 of the symbol matrix SM. The payout symbol “Mega” 78 c is rearranged in the second display region 75. The magnification symbol “20×” 77 c is rearranged in the third display region 76. Accordingly, the payout is to be awarded by multiplying a value of the payout set for the payout symbol “Mega” corresponding to the combination of the three “sub characters” 122, by magnification of the magnification symbol “20×”. In this case, since the combination of the three symbols “sub character” 122 is rearranged, the jackpot bonus game is selected and executed according to this type of the combination.

FIGS. 7A, 7B, and 7C are views each showing an exemplary image displayed in the slot machine 10 shown in FIG. 2 during the free game according to the first embodiment. As shown in FIG. 7A, when the symbols rearranged in the symbol matrix SM in FIG. 5C form a combination that results in execution of the free game, the free game is started. Upon start of the free game, the upper image display panel 33 displays a free-game-number display image 90 a indicative of the number of times in executing the free game. In this case, the free-game-number display image 90 a of “10 FREE GAME” is displayed indicating that the number of times in executing the free game has been set to ten.

As shown in FIG. 7B, one or more of the magnification symbols 77 a, 77 b, 77 c of the plural types for determining the payout magnification are displayed on the third display region 76 of the symbol matrix SM. One or more of the payout symbols 78 a, 78 b, 78 c of the plural types for determining the payout are rearranged in the second display region 75 of the symbol matrix SM. In this case, the magnification symbol “10×” 77 a is rearranged in the third display region 76 of the symbol matrix SM. The payout symbol “Mini” 78 a is rearranged in the second display region 75 of the symbol matrix SM.

As shown in FIG. 7C, any combination of the symbols “main character” 121, “sub character” 122, “office building” 123, “gold bullion” 124, “car” 125, “stock certificate” 126, “jet ” 127, and “villa” 128, is rearranged in the first display region 74 of the symbol matrix SM. In this case, a combination of the three symbols “sub character” 122 is rearranged in the first display region 74 of the symbol matrix SM. The payout symbol “Mini” 78 a is rearranged in the second display region 75. The magnification symbol “10×” 77 a is rearranged in the third display region 76. Accordingly, the payout is to be awarded by multiplying a value set for the payout symbol “Mini” corresponding to the combination of the three symbols “sub character” 122, by magnification of the magnification symbol “10×”. In this case, since the combination of the three symbols “sub character” 122 is rearranged, the jackpot bonus game is selected and executed according to this type of the combination.

Next, a process executed in the slot machine 10 according to the first embodiment will be described in detail with reference to the accompanying drawings. The main CPU 41 reads out and executes a game program, thereby conducting the game.

FIG. 8 is a flowchart showing a subroutine of the main process. In the main process, first, when a power switch is turned on (that is, when power is supplied), a motherboard 40 and a gaming board 50 are activated respectively, so that the CPU 51 executes an initial setting process (step S101). In this initial setting process, the main CPU 41 executes the BIOS stored in the ROM 42, decompresses, in the RAM 43, compressed data included in the BIOS, executes the BIOS decompressed in the RAM 43, and performs diagnosis and initialization of each of the peripheral devices. Further, the main CPU 41 writes game programs or the like from the ROM 42 into the RAM 43, and acquires payout-ratio setting data and country-identification information. The main CPU 41 also performs an authentication process for each program during execution of the initial setting process.

Next, the main CPU 41 performs a game execution process described later with reference to FIG. 9 (step S102). In this game execution process, the main CPU 41 sequentially reads and executes the game programs or the like from the ROM42. By performing this game execution process, the slot machine 10 executes the game according to the first embodiment. The game execution process is repeatedly performed while power is supplied to the slot machine 10.

FIG. 9 is a flowchart showing a subroutine of the game execution process invoked and performed at step S102 of the subroutine shown in FIG. 8 according to the first embodiment. First, the main CPU 41 judges whether a coin has been bet or not (step S201). Specifically, the main CPU 41 judges whether or not an input signal has been received, the signal being output from the 1-BET switch 26S when the 1-BET button 26 is pressed, or alternatively, being output from the MAX-BET switch 27S when the MAX-BET button 27 is pressed. The main CPU 41 controls the current step to return to the process at step S201 upon judging that no coin has been bet (step S201: NO).

On the other hand, the main CPU 41 subtracts the number of bet coins from the credit amount stored in the RAM 43 (step S202) upon judging that a coin has been bet (step S201: YES). In the case where the number of bet coins is larger than the credit amount stored in the RAM 43, the main CPU 41 controls the current step to return to step S201 without performing the process for subtracting the number of bet coins from the credit amount stored in the RAM 43. In the case where the number of bet coins exceeds the upper limit (fifty coins in this embodiment) of coins that can be bet in one game, the main CPU 41 controls the process to shift to step S203 without performing the process for subtracting the number of bet coins from the credit amount stored in the RAM 43.

At step S203, the main CPU 41 judges whether or not the start button 23 has been set to ON (step S203). Specifically, the main CPU 41 judges whether or not an input signal has been received, the signal being output from the start switch 23S when the start button 23 is pushed. The main CPU 41 controls the step to return to step S201 upon judging that the start button 23 has not been set to ON (step S203: NO). Where the start button 23 has not been set to ON (for example, where an instruction has been input to terminate the game without setting the start button 23 to ON), the main CPU 41 cancels acceptance of a subtraction result at step S202.

On the other hand, when the main CPU 41 judges that the start button 23 has been set to ON (step S203: YES), the main CPU 41 carries out symbol rearrangement process which will be described later with reference to FIG. 10 (step S204). Specifically, the CPU 41 executes the program stored in the RAM 43 and determines the symbols to be rearranged in the symbol matrix SM displayed on the lower image display panel 16. The symbols rearranged in the first display region 74 of the symbol matrix SM are determined from among the symbols, “main character” 121, “sub character” 122, “office building” 123, “gold bullion” 124, “car” 125, “stock certificate” 126, “jet” 127, and “villa” 128. The symbol rearranged in the second display region 75 of the symbol matrix SM is determined from among the payout symbols “Mini” 78 a, “Major” 78 b, and “Mega” 78 c for determining payout. The symbol rearranged in the third display region 76 is determined from among the magnification symbols “5×” 77 a, “10×” 77 b, and “20×” 77 c for determining payout magnification. This determination is based on the symbol weighting data and random numeric values sampled by sampling the random numeric values in a numerical range which comes under a predetermined range of random numeric values.

Next, the main CPU 41 judges whether a prize has been established or not (step S205). Specifically, the main CPU 41 judges whether or not the number of symbols of respective types rearranged in the symbol matrix SM is a winning number allowed to award any of payouts. Herein, the prize is established on the condition that a predetermined number of symbols of the same type are rearranged in the first display region 74 of the symbol matrix SM.

Upon judging that the prize is established (step S205: YES), the main CPU 41 then executes a coin-payout process in accordance with the amount of bet and the number of coins set for the winning number (step S206). Specifically, in the case where one or more of the payout symbols 78 a, 78 b, 78 c for determining the payout and one or more of the magnification symbols 77 a, 77 b, 77 c for determining the payout magnification are rearranged in the second display region 75 and the third display region 76 of the symbol matrix SM, respectively, the main CPU 41 refers to identification data of these rearranged payout symbol and magnification symbol, respectively, from the data table stored in the ROM 42. The main CPU 41 then awards payout by multiplying a value set for the payout symbol rearranged in the second display region 75 by magnification of the magnification symbol rearranged in the third display region 76. Where the coins are deposited, the main CPU 41 executes a process for adding the number of paid-out coins to the credit amount stored in the RAM 43. On the other hand, in the coin-payout process, the main CPU 41 transmits the control signal to the hopper 66 to pay out the predetermined amount of coins.

On the other hand, the main CPU 41 judges whether a free game trigger has been established or not (step S207) when judging that the prize is not established (step S205: NO) or executing the process at step S206. Specifically, the main CPU 41 executes the program stored in the RAM 43 to sample the random numeric values in a numerical range which comes under a predetermined range of random numeric values, thereby judging whether or not the free game trigger condition has been satisfied based on the sampled random numeric values. Upon judging that the free game trigger is established (step S207: YES), the main CPU 41 executes a free game execution process described later with reference to FIG. 11 (step S208). In this free-game execution process, the main CPU 41 sequentially reads and executes the game programs or the like from the ROM 42 and performs the free-game execution process.

On the other hand, upon judging that the free game trigger has not been established (step S207: NO), the main CPU41 judges whether or not a jackpot bonus game trigger has been established (step S209). Specifically, the main CPU 41 executes the program stored in the RAM 43 to sample the random numeric values in a numerical range which comes under a predetermined range of random numeric values, thereby judging whether or not the jackpot bonus game trigger has been established based on the sampled random numeric values. Upon judging that the jackpot bonus game trigger has been established (step S209: YES), the main CPU 41 executes a jackpot bonus game execution process described later with reference to FIG. 12 (step S210). In this jackpot bonus game, the main CPU 41 sequentially reads and executes the game programs or the like from the ROM42 to execute the jackpot bonus game execution process.

The CPU 41 terminates the game execution process when judging that the jackpot bonus game trigger has not been established (step S209: NO) or when executing the process at steps S208 and 210.

FIG. 10 is a flowchart showing a subroutine of the symbol rearrangement process invoked and performed at step S204 of the subroutine shown in FIG. 9 according to the first embodiment of the present invention. First, the main CPU 41 displays the symbols in a scrolling manner (step S301). Specifically, the main CPU 41 successively displays in a scrolling manner the symbols that are rearranged in the symbol matrix SM displayed on the lower image display panel 16.

Next, the main CPU 41 determines the symbols to be rearranged (step S302). Specifically, the main CPU 41 selects a storage area set in the RAM 43, the area for storing predetermined symbol data, and then determines the symbols to be displayed on the first display region 74 of the symbol matrix SM from among the symbols “main character” 121, “sub character” 122, “office building” 123, “gold bullion” 124, “car” 125, “stock certificate” 126, “jet” 127, and “villa” 128.

Next, the main CPU 41 determines the magnification symbol and the payout symbol (step S303). Specifically, the main CPU 41 selects a storage area set in the RAM 43, the area for storing predetermined symbol data, and then determines one or more of the payout symbols 78 a, 78 b, 78 c to be displayed on the second display region 75 of the symbol matrix SM and one or more of the magnification symbols 77 a, 77 b, 77 c to be displayed on the third display region 76.

The main CPU 41 then rearranges the magnification symbol (step S304). Specifically, the main CPU 41 displays one or more of the magnification symbols 77 a, 77 b, 77 c determined at step S303 on the third display region 76 of the symbol matrix SM.

Next, the main CPU 41 rearranges the payout symbol (step S305). Specifically, the main CPU 41 displays one or more of the payout symbols 78 a, 78 b, 78 c determined at step S303 on the second display region 75 of the symbol matrix SM.

The main CPU 41 then rearranges the symbols (step S306). Specifically, the main CPU 41 displays the symbols determined at step S302 on the first display region 74 of the symbol matrix SM after the predetermined period having been preset has elapsed after rearrangement of one or more of the magnification symbols 77 a, 77 b, 77 c and one or more of the payout symbols 78 a, 78 b, 78 c in the third display region and the second display region, respectively. The main CPU 41 terminates the basic symbol rearrangement process when terminating this process.

FIG. 11 is a flowchart showing a subroutine of the free game execution process invoked and executed at step S208 of the subroutine shown in FIG. 9 according to the first embodiment of the present invention. First, the main CPU 41 determines a free-game number T as a number of times in executing the free game (step S401). Specifically, the main CPU 41 determines the free-game number T in accordance with a program stored in the RAM 43.

Next, the main CPU 41 performs a process for setting the free-game number B=T (step S402). Specifically, the main CPU 41 sets a remaining free-game number B=T in the storage area provided in the RAM 43, the area for storing the data indicative of the remaining free-game number B as the remaining number of times in executing the free game. A value of T is equal to the free-game number T determined at step S401.

The main CPU 41 then judges whether or not the start button 23 has been set to ON (step S403). Specifically, the main CPU 41 judges whether or not an input signal has been received, the signal being output from the start switch 23S when the start button 23 is pushed. The main CPU 41 controls the step to return to step S403 upon judging that the start button 23 has not been set to ON (step S403: NO).

Upon judging that the start button 23 has been set to ON (step S403: YES), on the other hand, the main CPU 41 performs a process for displaying an effect image (step S404). Specifically, the main CPU 41 displays a free-game-number display images 90 a (see FIG. 7) corresponding to the free-game number on the upper image display panel 33.

Next, the main CPU 41 carries out a symbol rearrangement process (step S405). Specifically, the CPU 41 executes the program stored in the RAM 43 and determines the symbols to be rearranged in the symbol matrix SM displayed on the lower image display panel 16. Any combination of the symbols, “main character” 121, “sub character” 122, “office building” 123, “gold bullion” 124, “car” 125, “stock certificate” 126, “jet” 127, and “villa” 128 is rearranged in the first display region 74 of the symbol matrix SM. One or more of the payout symbols “Mini” 78 a, “Major” 78 b, and “Mega” 78 c for determining payout are rearranged in the second display region 75 of the symbol matrix SM. One or more of the magnification symbols “5×” 77 a, “10×” 77 b, and “20×” 77 c for determining payout are rearranged in the third display region 76. The above-rearrangement is determined based on the symbol weighting data and random numeric values sampled by sampling the random numeric values in a numerical range which comes under a predetermined range of random numeric values.

Next, the main CPU 41 judges whether or not a jackpot bonus trigger has been established (step S406). Specifically, the main CPU 41 executes the program stored in the RAM 43 to sample the random numeric values in a numerical range which comes under a predetermined range of random numeric values, thereby judging whether or not the jackpot bonus game trigger has been established based on the sampled random numeric values. The main CPU 41 controls the step to move to step S408 upon judging that the jackpot bonus game trigger has been established (step S406: NO).

On the other hand, upon judging that the jackpot bonus trigger has been established (step S406: YES), the main CPU 41 executes a jackpot bonus game execution process described later with reference to FIG. 12 (step S407). In this jackpot bonus game, the main CPU 41 sequentially reads and executes the game programs or the like from the ROM42 to execute the jackpot bonus game execution process.

Next, the main CPU 41 judges whether or not a prize has been established (step S408). Specifically, the main CPU 41 judges whether or not the number of symbols of respective types rearranged in the symbol matrix SM is a winning number allowed to award any type of payout. Herein, the prize is established on the condition that a predetermined number of symbols of the same type are rearranged in the first display region 74 of the symbol matrix SM.

Thereafter, upon judging that the prize has been established (step S408: YES), the main CPU 41 performs a coin-payout process for paying out the coins of the number set for the winning number (step S409). Specifically, in the case where one or more of the payout symbols 78 a, 78 b, 78 c for determining the payout and one or more of the magnification symbols 77 a, 77 b, 77 c for determining the payout magnification are rearranged in the second display region 75 and the third display region 76 of the symbol matrix SM, respectively, the main CPU 41 refers to identification data of these rearranged payout symbol and magnification symbol, respectively, from the data table stored in the ROM 42. The main CPU 41 then awards payout by multiplying a value set for the payout symbol rearranged in the second display region 75 by magnification of the magnification symbol rearranged in the third display region 76. Where the coins are deposited, the main CPU 41 performs a process for adding the number of paid-out coins to the credit amount stored in the RAM 43. In the coin-payout process, the main CPU 41 transmits the control signal to the hopper 66 to pay out the predetermined amount of coins.

On the other hand, upon judging that the prize has not been established (step S408: NO) or upon executing the processes at steps S407 and S409, the main CPU 41 sets the remaining free-game number B=B−1 (step S410). Specifically, the main CPU 41 sets B=B−1 at a value of the free-game number B stored in the RAM 43.

The main CPU 41 then judges whether or not a value of the remaining free-game number B is equal to zero (step S411). Specifically, the main CPU 41 judges whether or not a value of the remaining game number stored in the RAM43 is equal to zero. Upon judging that the value of the remaining free-game number B is not zero (step S411: NO), the main CPU 41 controls the step to return to step S 403.

On the other hand, upon judging that the value of B is equal to zero (step S411: YES), the main CPU 41 terminates the free-game execution process.

FIG. 12 is a flowchart showing a subroutine of the jackpot bonus game execution process invoked and performed at step S210 of the subroutine shown in FIG. 9 and at step S407 of the subroutine shown in FIG. 11, according to the first embodiment of the present invention. At first, the main CPU 41 displays a first effect selection image (step S501). Specifically, the main CPU 41 displays a jackpot bonus game display image 90 b displaying start of the jackpot bonus game on the upper image display panel 33, and a selection screen for allowing a player to determine a type of jackpot bonus game in the display region 92.

Next, the main CPU 41 judges whether or not the symbol is selected (step S502). Specifically, the main CPU 41 judges whether or not the symbol displayed on the selection screen for determining the types of jackpot bonus games is selected via the touch panel 69. Upon judging that the symbol is not selected (step S602: NO), the main CPU 41 controls the step to return to step S502. Upon judging that the symbol is not selected (step S502: NO), the main CPU 41 controls the current step to return to the process at step S502

On the other hand, upon judging that the symbol is selected (step S502: YES), the main CPU 41 displays the selected effect image (step S503). Specifically, the main CPU 41 sequentially reads out of the ROM 42 the effect image corresponding to the symbol selected at step S502, and displays the effect image in the display region 92.

Next, the main CPU 41 judges whether or not a “Win” effect is read (step S504). Specifically, the main CPU 41 judges whether or not the effect image read at step S503 corresponds to the “Win” effect. Upon judging that the read-out image does not correspond to the “Win” effect (step S504: NO), the main CPU 41 displays the effect image of “Lose” (step S505). Specifically, the CPU 41 reads the effect image corresponding to the effect image of “Lose” from the ROM 42, and displays the effect image in the display region 92. Next, the main CPU 41 executes a payout process of “Mini” (step S506). Specifically, the main CPU 41 executes a coin-payout process corresponding to a “Mini” payout. Where the coins are deposited, the main CPU 41 performs a process for adding the number of paid-out coins to the credit amount stored in the RAM 43. On the other hand, in the coin-payout process, the main CPU 41 transmits the control signal to the hopper 66 to pay out the predetermined amount of coins. The main CPU 41 terminates the jackpot-bonus game execution process when executing the process at step S506.

On the other hand, upon judging that the “Win” effect is read (step S504: YES), the main CPU 41 displays a second effect selection image (step S507). Specifically, the main CPU 41 displays in the display region 92 a selection screen for determining a type of the jackpot bonus game, in a manner to make the symbol selected at step S502 identifiable.

Next, the main CPU 41 judges whether or not the predetermined symbol has been selected (step S508). Specifically, the main CPU 41 judges whether or not a symbol other than the symbol having been selected at step S 502 is selected via the touch panel 69. Upon judging that the predetermined symbol is not selected (step S508: NO), the main CPU 41 controls the current step to return to the process at step S508.

On the other hand, upon judging that the predetermined symbol has been selected (step S508: YES), the main CPU 41 displays an effect image corresponding to the selected symbol (step S509). Specifically, the main CPU 41 sequentially reads out of the ROM 42 the effect image corresponding to the symbol selected at step S502, and displays the effect image in the display region 92.

Next, the main CPU 41 judges whether or not a “Win” effect is read (step S510). Specifically, the main CPU 41 judges whether or not the effect image read at step S509 corresponds to the “Win” effect. Upon judging that the read-out image does not correspond to the “Win” effect (step S510: NO), the main CPU 41 displays the effect image of “Lose” (step S511). Specifically, the main CPU 41 reads the effect image corresponding to the effect image of “Lose” from the ROM 42 and displays the effect image in the display region 92. Next, the main CPU 41 executes a payout process of “Major” (step S512). Next, the main CPU 41 executes a payout process corresponding to the payout symbol “Major” (step S512). Specifically, the main CPU 41 executes a coin-payout process corresponding to a “Major” payout. Where the coins are deposited, the main CPU 41 performs a process for adding the number of paid-out coins to the credit amount stored in the RAM 43. On the other hand, in the coin-payout process, the main CPU 41 transmits the control signal to the hopper 66 to pay out the predetermined amount of coins. The main CPU 41 terminates the jackpot-bonus execution process when executing the process at step S512.

On the other hand, upon judging that the “Win” effect is read (step S510: YES), the main CPU 41 displays the effect image of “Win” (step S513). Specifically, the main CPU 41 reads the effect image corresponding to the effect image of “Win” from the ROM 42 and displays the effect image in the display region 92. Next, the main CPU 41 executes a payout process corresponding to the payout symbol “Mega” (step S514). Specifically, the main CPU 41 performs the coin-payout process corresponding to “Mega”. Where the coins are deposited, the main CPU 41 performs a process for adding the number of paid-out coins to the credit amount stored in the RAM 43. On the other hand, in the coin-payout process, the main CPU 41 transmits the control signal to the hopper 66 to pay out the predetermined amount of coins. The main CPU 41 terminates the jackpot-bonus game execution process when executing the process at step S514.

Next, a slot machine 100 according to a second embodiment will be described with reference to the accompanying drawings. Here, the slot machine according to the second embodiment described below is a so-called hybrid type slot machine, which has a transparent liquid crystal panel allocated in front of a plurality of mechanical reels supported in a rotatable manner, and executes a game by displaying images of various types of symbols drawn on an outer peripheral surface of the mechanical reels through the transparent liquid crystal panel. The slot machine according to the second embodiment has an appearance, circuitry, and the like that are substantially the same as those of the slot machine 10 according to the first embodiment. Thus, a duplicated explanation is omitted here. In addition, the constituent elements corresponding to those of the slot machine 10 are designated by the same reference numerals and are explained.

FIG. 13 is a view for schematically showing an appearance of the slot machine 100 according to the second embodiment of the present invention. As shown in FIG. 13, the slot machine 100 is rotatably provided with five reels 101 a to 101 e. A symbol column made up of the symbols “main character” 121, “sub character” 122, “office building” 123, “gold bullion” 124, “car” 125, “stock certificate” 126, “jet” 127, and “villa” 128 is drawn on the respective one of outer circumferential surfaces of the reels 101 a to 101 c.

Furthermore, a symbol column made up of the payout symbols “Mini”, “Major”, and “Mega” is drawn on an outer circumferential surface of the reel 101 d. A symbol column made up of the magnification symbols “5×”, “10×”, “15×”, and “20×” is drawn on an outer circumferential surface of the reel 101 e.

A main liquid crystal panel 202 formed of a transparent liquid crystal panel, which is disposed at the main door, is provided in front of the respective reels 101 a to 101 e. The main liquid crystal panel 202 displays the symbol display region 28 with a visually recognizable rear surface so as to surround symbols displayed on the reels 101 a to 101 e in a stopped state, respectively. The symbols drawn on the reels 101 a to 101 e are visualized by rendering the symbol display region transparent.

FIG. 14 is a flowchart showing a subroutine of a symbol rearrangement process invoked and performed at step S204 of the subroutine shown in FIG. 11 according to a third embodiment of the present invention. First, the main CPU 41 displays the symbols in a scrolling manner (step S601). Specifically, the main CPU 41 successively displays in a scrolling manner the symbols that are rearranged in the symbol matrix SM displayed on the lower image display panel 16.

The main CPU 41 then determines the symbols to be rearranged (step S602). Specifically, the main CPU 41 selects a storage area set in the RAM 43, the area for storing predetermined symbol data, and then determines the payout symbol to be displayed on the first display region 74 of the symbol matrix SM from among the symbols “main character” 121, “sub character” 122, “office building” 123, “gold bullion” 124, “car” 125, “stock certificate” 126, “jet” 127, and “villa” 128.

Next, the main CPU 41 judges whether or not the side-BET has been set to ON (step S603). Specifically, the main CPU 41 judges whether or not an input signal has been received, the signal being output from the side-BET switch 85S when the side-BET button 85 is pushed. Upon judging that the side-BET has not been set to ON (step S603: NO), the main CPU 41 controls the current step to move to the process at step S607.

On the other hand, upon judging that the side-BET button 85 is set to ON (step S603: YES), the main CPU 41 determines the magnification symbol and the payout symbol (step S604). Specifically, the main CPU 41 selects a storage area set in the RAM 43, the area for storing predetermined symbol data, and then determines one or more of the payout symbols 78 a, 78 b, 78 c to be displayed on the second display region 75 of the symbol matrix SM and one or more of the magnification symbols 77 a, 77 b, 77 c to be displayed on the third display region 76.

The main CPU 41 then rearranges the magnification symbol (step S605). Specifically, the main CPU 41 displays the magnification symbols 77 a, 77 b, 77 c determined at step S604 on the third display region 76 of the symbol matrix SM.

The main CPU 41 then rearranges the payout symbol (step S606). Specifically, the main CPU 41 displays one or more of the payout symbols 78 a, 78 b, 78 c determined at step S604 on the second display region 75 of the symbol matrix SM.

The main CPU 41 then rearranges the symbols (step S607). Specifically, the main CPU 41 displays the symbols determined at step S602 on the first display region 74 of the symbol matrix SM after the predetermined period having been preset has elapsed after rearrangement of one or more of the magnification symbols 77 a, 77 b, 77 c and the payout symbols 78 a, 78 b, 78 c in the third display region and the second display region, respectively. The main CPU 41 terminates the symbol rearrangement process when terminating this process.

FIG. 15 is a flowchart showing a subroutine of the symbol rearrangement process invoked and performed at step S204 of the subroutine shown in FIG. 11 according to a fourth of the present invention. First, the main CPU 41 displays the symbols in a scrolling manner (step S701). Specifically, the main CPU 41 successively displays in a scrolling manner the symbols that are rearranged in the symbol matrix SM displayed on the lower image display panel 16.

Next, the main CPU 41 determines the symbols to be rearranged (step S702). Specifically, the main CPU 41 selects a storage area set in the RAM 43, the area for storing predetermined symbol data, and then determines the symbols to be displayed on the first display region 74 of the symbol matrix SM from among the symbols “main character” 121, “sub character” 122, “office building” 123, “gold bullion” 124, “car” 125, “stock certificate” 126, “jet” 127, and “villa” 128.

Next, the main CPU 41 judges whether or not a winning combination has been internally established (step S703). Specifically, the main CPU 41 judges whether or rearrangement of the winning combination in the first display has been internally decided. The main CPU 41 selects the second random number table (step S704) when judging that the winning combination has been internally determined (step S703: YES). Specifically, the main CPU 41 selects the second random number table from the ROM 42, in which random numbers are provided so as to set a high probability of determination of the second process (see FIG. 4). In the second process, the symbols are rearranged in the first display region 74 after a predetermined period having been preset has elapsed after rearrangement of one or more of the payout symbols 78 a, 78 b, 78 c and one or more of the magnification symbols 77 a, 77 b, 77 c in the second display region 75 and the third display region 76 and, respectively.

On the other hand, the main CPU 41 selects the first random number table (step S705) when judging that the winning combination has not been internally determined (step S703: NO). Specifically, the main CPU 41 selects the first random number table, in which random numbers are provided so as to set a high probability of determination of the first process (see FIG. 4). In the first process, one or more of the payout symbols 78 a, 78 b, 78 c and one or more of the magnification symbols 77 a, 77 b, 77 c are rearranged in the second display region 75 and the third display region 76, respectively, after rearrangement of the symbols in the first display region 74.

Next, the main CPU 41 executes a process for randomly determining the first or second process upon execution of the process at steps S704 and S705 (step S706) Specifically, the main CPU 41 extracts a random number, thereby determining the first or second process corresponding to the extracted random number.

Next, the main CPU 41 judges whether or not the first process is determined (step S707). Specifically, the main CPU 41 judges whether or not a process determined at step S706 is the first process. Upon judgment that the first process has been determined (step S707: YES). The main CPU 41 rearranges one or more of the magnification symbols 77 a, 77 b, 77 c and one or more of the payout symbols 78 a, 78 b. 78 c (step S708). Specifically, the main CPU 41 displays one or more of the magnification symbols 77 a, 77 b, 77 c on the third display region 76 of the symbol matrix SM and one or more of the payout symbols 78 a, 78 b, 78 c on the second display region 75 of the symbol matrix SM.

The main CPU 41 then rearranges the symbols (step S709). Specifically, the main CPU 41 displays the symbols determined at step S702 on the first display region 74 of the symbol matrix SM after a predetermined period having been preset has elapsed after rearrangement of one or more of the payout symbols 78 a, 78 b, 78 c and one or more of the magnification symbols 77 a, 77 b, 77 c in the second display region 75 and the third display region 76, respectively. The main CPU 41 terminates the symbol rearrangement process when terminating this process.

On the other hand, upon judging that the first process is not determined (step S707: NO), the main CPU 43 rearranges the symbols (step S710). Specifically, the main CPU 41 rearranges the symbols determined at step S702 in the first display region 74 of the symbol matrix SM.

The main CPU 41 then rearranges the magnification symbol and the payout symbol (step S711). Specifically, the main CPU 41 rearranges one or more of the magnification symbols 77 a, 77 b, 77 c and one or more of the payout symbols 78 a, 78 b, 78 c in the third display region 76 and the second display region 75, respectively, after the predetermined period having been preset has elapsed after rearrangement of the symbols in the first display region 74 of the symbol matrix SM. The main CPU 41 terminates the symbol rearrangement process when terminating this process.

While the embodiment according to the present invention has been described, the description presents only some of the specific examples and is not intended to limit the present invention in any way and specific constructions of each means and the like can be properly changed in terms of design. Moreover, the effects described in the embodiment of the present invention are only the most preferable effects generated from the present invention and the effects to be caused by the present invention is not limitative thereto. 

1. A slot machine, comprising: a display device including a symbol display region having a first display region for displaying plural types of symbols, a second display region for displaying at least one of plural types of payout symbols for determining payout, and a third display region for displaying at least one of plural types of magnification symbols for determining a payout magnification; a memory for memorizing two tables, one is for storing identification data of the plural types of payout symbols and payout data corresponding to the payout symbols, and the other is for storing identification data of the plural types of magnification symbols and magnification data corresponding to the magnification symbols; and a controller for controlling the display device and the memory, the controller being programmed to: (a) execute a basic game; (b) randomly rearrange, during the basic game, the plural types of symbols in the first display region, at least one of the plural types of payout symbols in the second display region, and at least one of the plural types of magnification symbols in the third display region; and (c) award payout determined by multiplying the payout data memorized in the memory, the payout data corresponding to the payout symbol rearranged in the second display region, by the magnification data corresponding to the magnification symbol rearranged in the third display region, by referring to the tables memorized in the memory, in the case where a combination of the symbols displayed on the first display region during the basic game is a predetermined combination.
 2. The slot machine according to claim 1, wherein: the controller, in the itemized (b), rearranges the plural types of symbols in the first display region after a predetermined period having been preset has elapsed after rearrangement of at least one of the plural types of payout symbols and at least one of the plural types of magnification symbols in the second display region and the third display region, respectively.
 3. The slot machine according to claim 1, wherein: the controller, in the itemized (b), randomly switches between a first process and a second process, the first process is for rearranging at least one of the plural types of payout symbols and at least one of the plural types of magnification symbols in the second display region and the third display region, respectively, after rearrangement of the plural types of symbols in the first display region, and the second process is for rearranging the plural types of symbols in the first display region after the predetermined period having been preset has elapsed after rearrangement of at least one of the plural types of payout symbols and at least one of the plural types of magnification symbols in the second display region and the third display region, respectively.
 4. The slot machine according to claim 3, further comprising: a memory for memorizing a first random number table provided with random numbers so as to set a high probability of determination of the first process, and a second random number table provided with random numbers so as to set a high probability of determination of the second process, wherein: the controller randomly switches between the first process and the second process with use of the second random number table in the case where arrangement of a winning combination in the first display region is internally determined.
 5. The slot machine according to claim 1, further comprising: a BET button for accepting input of a side-BET, wherein: the controller, in the itemized (c), awards payout determined by multiplying a value of the payout symbol rearranged in the second display region, by magnification of the magnification symbol rearranged in the third display region on the condition of the input of the side-BET through the BET button.
 6. A slot machine, comprising: a display device including a symbol display region having a first display region for displaying plural types of symbols, a second display region for displaying at least one of plural types of payout symbols for determining payout, and a third display region for displaying at least one of plural types of magnification symbols for determining a payout magnification; a memory for memorizing two tables, one is for storing identification data of the plural types of payout symbols and payout data corresponding to the payout symbols, and the other is for storing identification data of the plural types of magnification symbols and magnification data corresponding to the magnification symbols; and a controller for controlling the display device and the memory, the controller being programmed to: (a) execute a basic game; (b) rearrange, during the basic game, the plural types of symbols in the first display region after a predetermined period having been preset has elapsed after rearrangement of at least one of the plural types of payout symbols and at least one of the plural types of magnification symbols in the second display region and the third display region, respectively; and (c) award payout determined by multiplying the payout data memorized in the memory, the payout data corresponding to the payout symbol rearranged in the second display region, by the magnification data corresponding to the magnification symbol rearranged in the third display region, by referring to the tables memorized in the memory, in the case where a combination of the symbols displayed on the first display region during the basic game is a predetermined combination.
 7. The slot machine according to claim 6, wherein: the controller, in the itemized (b), randomly switches between a first process and a second process, the first process is for rearranging at least one of the plural types of payout symbols and at least one of the plural types of magnification symbols in the second display region and the third display region, respectively, after rearrangement of the plural types of symbols in the first display region, and the second process is for rearranging the plural types of symbols in the first display region after the predetermined period having been preset has elapsed after rearrangement of at least one of the plural types of payout symbols and at least one of the plural types of magnification symbols in the second display region and the third display region, respectively.
 8. The slot machine according to claim 7, further comprising: a memory for memorizing a first random number table provided with random numbers so as to set a high probability of determination of the first process, and a second random number table provided with random numbers so as to set a high probability of determination of the second process, wherein: the controller randomly switches between the first process and the second process with use of the second random number table in the case where arrangement of a winning combination in the first display region is internally determined.
 9. The slot machine according to claim 6, further comprising: a BET button for accepting input of a side-BET, wherein: the controller, in the itemized (c), awards payout determined by multiplying a value of the payout symbol rearranged in the second display region, by magnification of the magnification symbol rearranged in the third display region on the condition of the input of the side-BET through the BET button.
 10. A slot machine, comprising: a display device including a symbol display region having a first display region for displaying plural types of symbols, a second display region for displaying at least one of plural types of payout symbols for determining payout, and a third display region for displaying at least one of plural types of magnification symbols for determining a payout magnification; a memory for memorizing two tables, one is for storing identification data of the plural types of payout symbols and payout data corresponding to the payout symbols, and the other is for storing identification data of the plural types of magnification symbols and magnification data corresponding to the magnification symbols; and a controller for controlling the display device and the memory, the controller being programmed to: (a) execute a basic game; (b) randomly switches between a first process and a second process, the first process is for rearranging at least one of the plural types of payout symbols and at least one of the plural types of magnification symbols in the second display region and the third display region, respectively, after rearrangement of the plural types of symbols in the first display region, and the second process is for rearranging the plural types of symbols in the first display region after the predetermined period having been preset has elapsed after rearrangement of at least one of the plural types of payout symbols and at least one of the plural types of magnification symbols in the second display region and the third display region, respectively; and (c) award payout determined by multiplying the payout data memorized in the memory, the payout data corresponding to the payout symbol rearranged in the second display region, by the magnification data corresponding to the magnification symbol rearranged in the third display region, by referring to the tables memorized in the memory, in the case where a combination of the symbols displayed on the first display region during the basic game is a predetermined combination.
 11. The slot machine according to claim 10, further comprising: a memory for memorizing a first random number table provided with random numbers so as to set a high probability of determination of the first process, and a second random number table provided with random numbers so as to set a high probability of determination of the second process, wherein: the controller randomly switches between the first process and the second process with use of the second random number table in the case where arrangement of a winning combination in the first display region is internally determined.
 12. The slot machine according to claim 10, further comprising: a BET button for accepting input of a side-BET, wherein: the controller, in the itemized (c), awards payout determined by multiplying a value of the payout symbol rearranged in the second display region, by magnification of the magnification symbol rearranged in the third display region on the condition of the input of the side-BET through the BET button. 